Improvement in loom-shuttles



F'. O. TUCKER.

Improvement in Loom Shu'tfles.A

yf Patented Nov. 28,1871.

UNITED STATES PATENT QFFICE.

IMPROVEMENT IN LOO IVI-SHUTTLES.

Specification forming part of Letters Patent No. 121,262, dated November 28, 1871.

To all whom t may concern:

Beit known that I, FREDERICK O. TUCKER, of Stonington, in the county of New London and State of Connecticut, have invented certain new and useful Improvements in Loom- Shu'ttles; and that the following is a full, clear, and exact description of the same.

This invention relates to an improved attachment to loom-shuttles for preventing floats in weaving cloth, 85o., because `of an imperfect Warp-shed, the presence of extraneous matter, or other obstructing` cause in the warp-threads. The invention consists of a device within the body of the shuttle, and at one side thereof, arranged to be set free by an imperfect warp-shed, the presence of extraneous matter, or other obstructing cause in the warp-shed, and constructed and adapted when set free from such causes to swing toward the bobbin-spindle and in the line of travel of the weft-thread therefrom, so that in the further feed of said thread a sufficient strain will be brought thereon to cause its breakage or severing.

In the accompanying drawing my improvements in loom-shuttles are illustrated, Figure l being a plan view of the end of a shuttle at which the eduction-tube and my improved attachment are located; Fig. 2, a sectional view longitudinally of the portion of shuttle shown in Fig. l 5 Fig. 3, a transverse section in plane of line a: x, Fig. l.

A in the drawing represents a portion of the shuttle-body; B, the eduction-tube; and C, the bobbin-spindle, these several parts being constructed and arranged as ordinarily. D, my improved attachment, constructed and arranged as follows: a, the guard or weft-obstructing device. This device a. is arranged within the open body of the shuttle, and upon one side thereof, at the end having the eduction-tube B. In the present instance it is constructed of an arm, b, hung at its lower end on a fulcrum, c, of the shuttle-body, and in a position suitable for it to swing toward and against the bobbin-spindle c, whereon, by its upper end, it will then rest. This arm b is held by a pawl, d, in the position shown in the drawing-that is, up against the side of the shuttle-body-the pawl d interlocking with a notch, f, of the arm. The pawl d is constructed of a wire, g, that is extended along the length of the shuttle and about a pin, h, which secures it in position, and thence toward the arm b, bearing against it at or near its lower end, so as to act as a spring when the pawl is released from the arm b to throw said arm b toward and against the bobbin-spindle 5 Z, atrigger, arranged in shuttle-body in position to depress the pawl d and release it from the arm b. This trigger Z projects above the upper face of the shuttle, and by it, as the shuttle travels, from an imperfect warp-shed or other cause, the freeing of the weft-obstructing guard a is secured. The arm b, at its end and at its edge toward the bobbin-spindle c, is constructed with a hook, m, the point of which, when the arm is against the bobbin-spindle, as shown in dotted lines, Fig. 3, rests directly on the said spindle.

With an attachment, D, constructed and arranged as above described, in the use of the shuttle, should there be an imperfect warp-shed, or extraneous matter present, or other obstruction in the warp, the trigger Z is operated, releasing the pawl d fromthe arm a, which then, by the force of the spring portion to the wire g, is thrown toward and against the bobbin-spindle C, where, bein g held, the weft-thread, in delivering, nally comes about the guard-hooks m, and thus forms an increased tension, and bind is broken or severed, producing through the ordinary stop motion a stoppage of the loom, and conscquently preventing the formation of floats. Replacing the guard a against the side of the shuttlc-body with the pawl d inter-locked with its notch f, and the shuttle is ready for use again.

kThe hook m of guard a may be dispensed with 3 but it is best to employ it, for it secures a more certain hold of the weft-thread. Without the hook m the breaking of the weft-thread would depend simply upon the friction between guard a, and bobbin-spindle C.

Although a wire, g, has been described as constituting both the pawl and spring for the arm or guard a, it is obvious that the said pawl and springi may be of distinct pieces of metal, and at one side of same for operation of the guard a, each in themselves constructed separate, Withsubstantially as and for the purpose described.

out regard to the operation the one ofthe other. The above specification of my invention signed Having thus described my invention, what I by me this 26th day of August, A. D. 1871. claim, and desire to secure by Letters Patent, F. O. TUCKER.

The guard or arm a, in combination With the Witnesses: pawl d, trigger Z, and spring-Wire g, relatively EDWIN W. BROWN, constructed and arranged Within a shuttle-body ALBERT W. BROWN. (95) 

